Weight is reasonable when split between two hikers – The Half Dome weighs 4 lbs. 11.5 oz. with all of the included components (tent body, rainfly, poles, footprint, stuff sacks, stakes, repair kit), and has a minimum weight of 3 lbs. 15 oz. (tent body, poles, and fly only).
We think the true weight most backpackers will carry on trail sits closer to 4 lbs. 4 oz. since most will want to carry the stakes for solid structure but might opt to leave the footprint behind.
When split between two hikers, that would leave each carrying just over two pounds. Many solo hikers will carry that much weight for a one person tent (or a roomier ultralight two-person tent), so the weight is reasonable when viewed through that lens.